If you were born on Wednesday, March 06, 1940 then Livin' on a Prayer by Bon Jovi was the number one on your 47th birthday, and went to number one on February 08, 1987. Check the price of Livin' on a Prayer by Bon Jovi on Amazon.com
The biggest selling book of 1987 (the year you turned 47) was The Tommyknockers by Stephen King.